Metal cased refractory with protected suspending means



J1me 1965 J. A. CROOKSTON ETAL 3,137,594

METAL CASED REFRACTORY WITH PROTECTED SUSPENDING MEANS Filed 001;. 3,1963 INVENTORS:

BY Ali/L E Boy a m s M. #01 655 gm? ,gm n W United States Patent 0 METALCASED REFRACTGRY W111i PRGTEQTED SUSPENDING MEANS Sames A. Crcolrston,Neil Boyer, and tlharles M. Hodges, Mexico, Mo assignors to A. P. GreenFire Brick (Zonrpany, Merico, Mo a corporation of Missouri Filed Get. 3,1963, Ser. No. 313,433 7 Qlairns. (@l. 110-99) The present inventionrelates to a metal cased refractory having suspending means anchored inone end thereof and specifically relates to a means for separating thesuspending portion of the hanger from the refractory mix.

The present invention is suitable for use with the basic brick makingmethod described in US. Patent No. 3,109,- 677 and is a specificimprovement useful wtih the structure and method described and claimedin Hodges and Boyer application Serial No. 227,494, filed October 1,1962.

In application 227,494, there is shown a wire hanger 'having ahoop-shaped hanger portion embedded in the end of a rectangular metalcased brick and having an anchor portion extending into the refractoryportion of the brick. Although the structure of Serial No. 227,494 is adecided improvement over present brick suspending means, it has beenfound that dificulty is incur-red in the field in freeing thehoop-shaped hanger member from the refractory mix to bend it outwardlyinto position for engaging the member from which the brick is suspendedin a furnace roof.

Accordingly, one of the principal objects of the present invention is toprovide means for separating the hanger portion of the suspending meansfrom the refractory mix to prevent the hanger from being embedded andsecured to the refractory mix.

Another principal object of the present invention is to provide a brickhaving a hanger anchored in one end thereof with a suspending portionlying adjacent to the end face of the refractory mix, but separated fromthe refractory so that the hanger is freely bendable into an upstandingposition when the brick is being installed in a furnace roof.

Another object of the present invention is to provide a paper sleeveadapted to fit over a hoop-shaped hanger to prevent the hanger frombecoming embedded in the end of a refractory brick whereby the hanger-isexposed and freely movable to its suspending position when the sleeve istorn.

Another object of the present invention is to provide a paperboardinsert having slots in one end adapted to fit beneath a hoop-shapedhanger to space the same from the end of a refractory brick to which thehanger is attached, whereby the hanger portion is free of attachment tothe refractory mix and can be easily bent outwardly with respect to thebrick during installation of the brick in a furnace roof. I

These and other objects and advantages will become apparent hereinafter.

The present invention comprises a refractory product having suspendingmeans anchored in the cold end thereof with a right angular hangerportion lying adjacent to the refractory with a member separating themetal hanger from the refractory mix.

In the drawings wherein like figures refer to like parts wherever theyoccur:

FIG. 1 shows a perspective View of a metal cased refractory brick havingone embodiment of the present invention applied thereto,

FIG. 2 is a fragmentary sectional view taken along line 2-2 of FIG. 1,

FIG. 3 is a plan View of the brick shown in FIG. 2,

. 3,187,694 Patented June 8, 1965 FIG. 4 is a fragmentary sectional viewtaken along line 44 of FIG. 3,

FIG. 5 is a fragmentary perspective view of the one end of a refractorybrick showing a modification of the present invention,

PEG. 6 is a fragmentary sectional view taken along line 66 of F 16. 5,

FIG. 7 is a fragmentary sectional view taken along line 7-7 of FIG. 5,and 7 FIG. 8 is a fragmentary perspective view showing the steps inexposing and bending the hoop-shaped suspending portion of the structureshown in FIG. 5.

FIG. 1 shows a metal cased refractory brick in comprising a metal casing'11 housing a compacted refractory mix 12 and having a cold face 13 inwhich a suspending means 14 is anchored. This structure is similar tothat shown and described in application Serial No. 227,494 and will notbe further described in detail here.

The suspending means 14 comprises a hoop-shaped hanger portion 15positioned substantially flush with the cold face 13 of the refractorybrick 1t) and connected to anchor portions 16 embedded in the body ofthe refractory mix 12. The anchor portions 16 retain the suspendingmeans 14 in the brick 1d.

Suitable separating means, such as the paperboard member 17 (shown inFIGS. 1-4) and the paper sleeve 18 (shown in FIGS. 5-8) separate thehanger portion 15 from the refractory mix 12, and keep the metal hanger15 from becoming embedded and secured to the refractory mix 1.2. Tosuspend the brick 19 from a furnace roof, the hanger member 15 is bentoutwardly with respect to the cold face 13 of the brick 11 (in thedirection of the arrows and as indicated by the broken lines in FIGS. 1and 8) into an upright position. Heretofore, the hoopshaped hangerportion 15 tended to be surrounded and attached to the refractory 12,and some difficulty has been incurred in attempting to free the metalhanger 15 from the refractory mix 12.

In fabricating the brick 16, the method shown in application Serial No.227,494 and in Patent No. 3,100,667 is used, and the separator means 17and 13 are positioned over the hoop-shaped hanger member 15 prior topositioning the refractory mix 12 within the case 11. In other respects,the method of making the brick 1b is similar to that described inapplication Serial No. 227,494 and.

Patent No. 3,106,667 and will not be described further herein.

The paperboard insert 17 is provided with spaced slots 19 in one end,and the slots 1? receive the anchor members 16 and securely position theseparator means 17 with respect to the hanger 15. When the refractorymix 12 is compacted to final density, the separator 17 tends to conformtothe contour of the hanger 15 as shown in FIG. 4. In the final brick itthe hanger 15 is substantially flush with the cold face 13 of the brick16*, but is separated from the refractory mix 12 by the paperboardinsert 17. Thus, the hanger 15 is freely bendable'to its suspendingposition (FIG. 1).

The paper sleeve 18 shown in FIGS. 5-8 is positioned over thehoop-shaped hanger 15 prior to positioning the refractory mix 12 in thecasing 11. Upon final compaction of the refractory mix 12, the papersleeve 18 closely conforms to the contour of the hanger 15 (as shown inFIGS. 6 and 7) and separates the hanger 15 from the re fractory mix 12.To expose the hanger 15, the paper sleeve 18 is ripped open (FIG. 8) andthe hanger 15 is exposed and freely bendable outwardly with respect tothe refractory 12 (indicated by the broken lines in FIG. 8).

In addition to possible damage to the end face 13 of the refractorybrick 1d and to the hanger mem'be-r'15, considerable time and effort maybe expended in freeing the ban er 15, in the field, when it is in directcontact with the refractory 12 and embedded therein. While paperboardand heavy paper have been indicated as .being suitable for theseparating means 17 and 18, other materials, such as cloth, wax, lowmelting .point plastic, and other combustible materials may be used,

This invention is intended to cover all changes and modifications of theexamples of the invention herein chosen for purposes of the disclosure,which do not constitute departures from the spirit and scope of theinvention.

What is claimed is:

1. A refractory product comprising a compressed refractory mix, a hangerhaving an anchor portion embedded in the refractory mix and a hangerportion lying substantially flush with the end of the refractory productwithin the refractory mix, and means interposed between the hangerportion and the refractory mix separating the hanger portion from therefractory mix, said means being distended into the refractory mixadjacent to the hanger portion, the hanger portion being freely bendableoutwardly away from the end of the refractory.

2. The structure of claim 1 wherein the means in ter posed between thehanger and the refractory mix is of a combustible material.

3. The structure of claim 1 wherein the means interposed between thehanger and the refractory mix is a heavy paper sleeve having an open endto receive the hanger and the sleeve portion surrounds the hangerportion to prevent the hanger from becoming attached to the refractory,the hanger being accessible upon tearing of the sleeve along its length.

4. The structure of claim 1 wherein the means interposed :between thehanger portion and the refractory mix is a paperboard member positionedbeneath the hanger portion.

5. The structure of claim 4 wherein the paperboard member is providedwith spaced slots into which are positioned the ends of hanger portionat their juncture with the anchor portions of the wire hanger.

6. A refractory product comprising a metal casing, a compressedrefractory mix within the casing, a wire hanger having a hoop-shapedhanger portion lying adjacent to an end of the refractory product andwithin the refractory mix and a pair of separated wire legs anchored inthe body of the refractory, and a paper sleeve positioned around thehoop-shaped portion, said sleeve enclosing the hoop-shaped portion andseparating the same from the refractory mix whereby the hanger isreadily accessible for bending outwardly-with respect to the end of therefractory upon tearing of the outer side of the sleeve, and the hangerportion is not in directcontac-t with the refractory mix, said meansbeing distended into the refractory mix adjacent to the hanger portion.

7. A refractory product comprising a metal casing, a compressedrefractory mix within the casing, a wire hanger having a hoop-shapedhanger portion lying adjacent to an end of the refractory product withinthe refractory mix and a pair of separated wire legsanchored in the bodyof the refractory, and a paperboard insert having spaced slots in oneedge positioned beneath the hoopshaped hanger with the legs beingreceived in the slots, the paperboard insert separating the hanger fromthe refractory mix whereby the hanger is freely accessible and easilybeat outwardly with respect to the end of the refractory, said meansbeing distended into the refractory mix adjacent to the hanger portion.

References Cited by the Examiner FOREIGN PATENTS 236,203 6/45Switzerland.

JAMES W. WESTHAVER, Primary Examiner.

1. A REFRACTORY PRODUCT COMPRISING A COMPRESSED REFRACTORY MIX, A HANGERHAVING AN ANCHOR PORTION EMBEDDED IN THE REFRACTORY MIX AND A HANGERPORTION LYING SUBSTANTIALLY FLUSH WITH THE END OF THE REFRACTORY PRODUCTWITHIN THE REFRACTORY MIX, AND MEANS INTERPOSED BETWEEN THE HANGERPORTION AND THE REFRACTORY MIX SEPARATING THE HANGER PORTION FROM THEREFRACTORY MIX, SAID MEANS BEING DISTENDED INTO THE REFRACTORY MIXADJACENT TO THE HANGER